CN107916374A - A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance - Google Patents
A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance Download PDFInfo
- Publication number
- CN107916374A CN107916374A CN201711132673.2A CN201711132673A CN107916374A CN 107916374 A CN107916374 A CN 107916374A CN 201711132673 A CN201711132673 A CN 201711132673A CN 107916374 A CN107916374 A CN 107916374A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- austenitic stainless
- anticorrosion stress
- steel
- control nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Abstract
A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance, belongs to stainless steel technical field.The stainless steel component weight percentages are：0.01≤C≤0.04,0.06≤N≤0.16,0.001≤Si≤0.080, Mn≤2.0,0.001≤P≤0.015, S≤0.005,17.0≤Cr≤25.0,8.0≤Ni≤25.0, Mo≤3.5, surplus Fe.Element in alloy also containing other residual elements and improvement hot-working character, such as O, Ca, Ti, Nb, B, La, Ce, Al, Zr, V, Mg, Cu, Co, B.Advantage is, avoids existing control nitrogen austenitic stainless steel since material anticorrosion stress-resistant performance reduces caused by low temperature is sensitized the problem of；The control nitrogen austenitic stainless steel has excellent anticorrosion stress-resistant performance.
Description
Technical field
The invention belongs to stainless steel technical field, more particularly to a kind of control nitrogen austenitic of anticorrosion stress-resistant excellent performance is not
Become rusty steel, anticorrosion stress-resistant excellent performance.
Background technology
It is on common Cr-Ni types stainless steel base, by reducing the carbon content in steel and adopting to control nitrogen austenitic stainless steel
The nuclear structural materials to be grown up with nitrogen alloying, that is, solve medium high carbon type austenitic stainless steel and cause since carbon content is higher
Corrosion among crystalline grains it is poor the problem of, and it is low to solve Ultra-low carbon type austenitic stainless steel intensity caused by carbon content is low
The problem of, stabilisation type austenitic stainless steel is also solved since surface quality is poor caused by TiN etc. is mingled with the problem of.It is difficult to understand to control nitrogen
Family name's body stainless steel due to good mechanical property, intergranular corrosion resistance corrosive nature, welding performance and cold and hot working performance,
It is widely used in nuclear reactor.But since control nitrogen austenitic stainless steel anticorrosion stress-resistant performance is relatively low, particularly
Reduced during nuclear reactor military service by the sensitization of prolonged low temperature and irradiation damage, the anticorrosion stress-resistant performance of material,
The service life of nuclear reactor is limited, its service life generally only 40 years.
The content of the invention
It is an object of the invention to provide a kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance, avoid
Some control nitrogen austenitic stainless steels due to low temperature be sensitized caused by material anticorrosion stress-resistant performance reduce the problem of.
The component weight percentages of control nitrogen austenitic stainless steel of the present invention are：0.01≤C≤0.04,0.06≤N≤
0.16,
0.001≤Si≤0.080, Mn≤2.0,0.001≤P≤0.015, S≤0.005,17.0≤Cr≤25.0,8.0
≤ Ni≤25.0, Mo≤3.5, surplus Fe.
In alloy also containing other residual elements and improve hot-working character element, as O, Ca, Ti, Nb, La, Ce, Al,
Zr, V, Mg, Cu, Co, B etc..
The beneficial effects of the invention are as follows：By reducing the cyrystal boundary segregation elements Si in steel, P, S and control crystal boundary active element
C, the content of N, suppresses the elements such as Si, P, S in austenite grain boundary segregation so that above-mentioned control nitrogen austenitic stainless steel is with good
Corrosion among crystalline grains, on the basis of mechanical property and welding performance, while there is excellent anticorrosion stress-resistant performance.
1)0.01≤C≤0.04
C is remarkably improved the intensity of austenitic stainless steel by solution strengthening.But since C can in austenitic stainless steel
The Cr of high Cr is formed with the Cr in steel23C6Type carbide, so as to cause local poor Cr, makes the corrosion resistance of steel be particularly resistance to crystalline substance
Between corrosive nature decline.Therefore intergranular corrosion resistance performance reduces in order to prevent, and the content of C element should be not more than 0.04；Too low C
It can cause the anticorrosion stress-resistant penalty of steel, its content should be not less than 0.01.
2)0.001≤Si≤0.080
Si elements add in conventional chromiumnickel austenite stainless steel generally as deoxidant element.Si elements are by for a long time
Low temperature sensitization and irradiation after can be in crystal boundary segregation, so as to reduce the anticorrosion stress-resistant performance performance of steel, therefore the Si in steel
Control of element is advisable no more than 0.080；Si content requirements too low at the same time can cause the cost of steel to raise, its content should not be low
In 0.001.
3)0.001≤P≤0.015
P is generally impurity element in austenitic stainless steel, and the solubility in austenite is very low, by prolonged
Low temperature be sensitized and irradiation after can be in crystal boundary segregation, so as to reduce the anticorrosion stress-resistant performance performance of steel, therefore the P element in steel
Control is advisable no more than 0.015；P is very difficult to remove in the fusion process of austenitic stainless steel at the same time, the requirement of too low P content
The cost of steel can be caused to raise, its content should be not less than 0.001.
4)S≤0.005
S is generally impurity element in austenitic stainless steel, and excessive S contents can deteriorate the hot-working character and corrosion resistant of steel
Corrosion energy；Particularly after prolonged low temperature is sensitized and is irradiated, S is in crystal boundary segregation, the serious anticorrosion stress-resistant for reducing steel
Performance, therefore the S elements in steel should be controlled and are advisable no more than 0.005.
5)17.0≤Cr≤25.0
Cr is the essential element for improving stainless steel corrosion resistance.Too low Cr contents can cause the corrosion resistance deficiency of steel；
Excessive Cr contents can form excessive ferrite and cause the precipitation of intermetallic phase, so as to deteriorate the mechanical property of steel, corrosion resistant
Corrosion energy, hot-working character and welding performance.Therefore the Cr contents control in steel is advisable between 17.0~25.0.
6)8.0≤Ni≤25.0
Ni is the essential element of strong formation and stable austenite in austenitic stainless steel, while can also improve the modeling of steel
Toughness and corrosion resistance；But since metallic nickel is expensive, in stainless steel it is a large amount of add can greatly improve raw material into
This.Therefore Ni contents control is advisable between 8.0~25.0.
7)Mo≤3.5
The ability that Mo improves stainless steel corrosion resistance is 3.3 times of Cr, and the presence of Mo drastically increases austenite not
The various corrosion resisting properties of rust steel；But Mo too high levels easily generate low melting point phase in solidification, reduce the hot-working character of steel
And welding performance；Metal molybdenum is expensive at the same time, a large amount of in stainless steel to add the cost that greatly improve raw material.Therefore
The control of Mo constituent contents is advisable no more than 3.5.
8)0.06≤N≤0.16
N element is the useful alloy element of austenitic stainless steel.The addition of appropriate N, is significantly reducing the plasticity of material
With the intensity that austenitic stainless steel can be greatly improved in the case of toughness；Nitrogen can also improve austenitic stainless steel strongly at the same time
Corrosion resistance, its beneficial effect is 30 times of Cr.Too low N content causes the intensity and corrosion resistance deficiency of steel；Cross
High nitrogen content reduces the hot-working character and anticorrosion stress-resistant performance of steel.Therefore Control of Nitrogen Content is advisable 0.06~0.16.
9)Mn≤2.0
S in Mn and steel combines to form MnS, improves the hot-working character of steel；But excessive Mn can be to the corrosion resistance of steel
It can cause damage.Therefore the Mn control of element in steel is advisable≤2.0.
It is an advantage of the current invention that avoid existing control nitrogen austenitic stainless steel material caused by low temperature is sensitized
The problem of anticorrosion stress-resistant performance reduces；The control nitrogen austenitic stainless steel has excellent anticorrosion stress-resistant performance.
Brief description of the drawings
Influence figure of the attached drawing 1 for C, S content to control nitrogen austenitic stainless steel anticorrosion stress-resistant performance.
Attached drawing 2 for Si, P content to control nitrogen austenitic stainless steel anticorrosion stress-resistant performance influence figure.
Embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
Using induction furnace melting, 12 stove steel, chemical composition are shown in Table 1.Ingot casting is forged into φ 20mm circles after 1260 DEG C of heating
Rod, bar is after 1100 DEG C keep the temperature solution heat treatment in 60 minutes again through 500 DEG C of sensitization 480h.Drawing is produced from the bar after sensitization
Sample is stretched, the contraction percentage of area of the steel in 300 DEG C of high temperature and pressure high purity waters using slow stretching test measurement, uses the contraction percentage of area
To characterize the anticorrosion stress-resistant performance of material, the contraction percentage of area is higher, and anticorrosion stress-resistant performance is better.
The chemical composition of 1 embodiment high-chromium austenite stainless steel of table
| Heat (batch) number | C | Si | Mn | P | S | Cr | Ni | Mo | N | Fe | Remarks |
| 1 | 0.013 | 0.009 | 0.95 | 0.003 | 0.002 | 19.51 | 9.75 | 0.11 | 0.09 | It is remaining | Example |
| 2 | 0.018 | 0.015 | 1.13 | 0.013 | 0.003 | 24.53 | 19.32 | 0.14 | 0.13 | It is remaining | Example |
| 3 | 0.024 | 0.033 | 1.59 | 0.007 | 0.004 | 17.54 | 11.67 | 2.73 | 0.11 | It is remaining | Example |
| 4 | 0.029 | 0.077 | 1.74 | 0.011 | 0.001 | 24.18 | 21.94 | 2.58 | 0.15 | It is remaining | Example |
| 5 | 0.034 | 0.003 | 1.22 | 0.014 | 0.006 | 19.33 | 10.14 | 0.08 | 0.07 | It is remaining | Comparative example |
| 6 | 0.046 | 0.001 | 0.97 | 0.006 | 0.003 | 24.26 | 17.59 | 0.12 | 0.10 | It is remaining | Comparative example |
| 7 | 0.007 | 0.062 | 0.82 | 0.007 | 0.007 | 17.91 | 12.06 | 2.97 | 0.08 | It is remaining | Comparative example |
| 8 | 0.002 | 0.021 | 1.21 | 0.012 | 0.002 | 24.48 | 22.19 | 2.65 | 0.14 | It is remaining | Comparative example |
| 9 | 0.024 | 0.003 | 1.71 | 0.024 | 0.003 | 19.12 | 11.04 | 0.03 | 0.12 | It is remaining | Comparative example |
| 10 | 0.019 | 0.058 | 0.97 | 0.019 | 0.003 | 24.25 | 22.19 | 0.12 | 0.09 | It is remaining | Comparative example |
| 11 | 0.022 | 0.096 | 1.13 | 0.022 | 0.002 | 17.71 | 12.06 | 2.83 | 0.13 | It is remaining | Comparative example |
| 12 | 0.021 | 0.113 | 0.83 | 0.004 | 0.003 | 24.08 | 23.61 | 2.71 | 0.12 | It is remaining | Comparative example |
Embodiment 1 controls the anticorrosion stress-resistant performance after the sensitization of nitrogen austenitic stainless steel low temperature
Attached drawing 1 shows influence of C, S content to the anticorrosion stress-resistant performance after control nitrogen austenitic stainless steel low temperature sensitization.
As it can be seen that when C content is between 0.01~0.04, and S contents are not more than 0.005, section receives speed and is not less than 80%, and control nitrogen is difficult to understand
Family name's body stainless steel also has good anticorrosion stress-resistant performance after too low prolonged low temperature sensitization temperature sensitiveization.
Attached drawing 2 show Si, P content to control nitrogen austenitic stainless steel low temperature sensitization after anticorrosion stress-resistant performance shadow
Ring.As it can be seen that when Si contents are not higher than 0.08, and P content is not more than 0.015, the contraction percentage of area is not less than 80%, controls nitrogen Ovshinsky
Body stainless steel also has good anticorrosion stress-resistant performance after the sensitization of prolonged low temperature.
The foregoing is merely a part for all embodiments of the present invention, it is not intended to limit the invention, it is all in the present invention
Spirit and principle within, any modification, equivalent replacement, improvement and so on, should be included in protection scope of the present invention it
It is interior.
Claims (2)
1. a kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance, it is characterised in that component weight percentages are：
0.01≤C≤0.04,0.06≤N≤0.16,0.001≤Si≤0.080, Mn≤2.0,0.001≤P≤0.015, S≤
0.005,17.0≤Cr≤25.0,8.0≤Ni≤25.0, Mo≤3.5, surplus Fe.
2. control nitrogen austenitic stainless steel according to claim 1, it is characterised in that also containing other residual elements or improvement
The element of hot-working character：O, the one or more in Ca, Ti, Nb, La, Ce, Al, Zr, V, Mg, Cu, Co, B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711132673.2A CN107916374A (en) | 2017-11-15 | 2017-11-15 | A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711132673.2A CN107916374A (en) | 2017-11-15 | 2017-11-15 | A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107916374A true CN107916374A (en) | 2018-04-17 |
Family
ID=61895632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711132673.2A Pending CN107916374A (en) | 2017-11-15 | 2017-11-15 | A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107916374A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601102A (en) * | 2018-05-10 | 2018-09-28 | 珠海泰米科技有限公司 | The compound heat-carrying conductor of steel enamel and electrically heated heat-generating disc, kettle, water heater of antirust scale-deposit-preventing |
| CN109136771A (en) * | 2018-10-19 | 2019-01-04 | 太原钢铁(集团)有限公司 | austenitic stainless steel and preparation method thereof |
| CN109649367A (en) * | 2018-12-05 | 2019-04-19 | 中车长江车辆有限公司 | The preparation method and vehicle of a kind of brake pipe, brake pipe |
| CN112391577A (en) * | 2020-08-19 | 2021-02-23 | 江阴市春瑞金属制品有限公司 | Pseudo-austenitic stainless spring steel wire and performance regulation and control method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07188863A (en) * | 1993-12-27 | 1995-07-25 | Daido Steel Co Ltd | Corrosion-resistant, high-strength austenitic stainless steel |
| CN101748342A (en) * | 2008-11-28 | 2010-06-23 | 宝山钢铁股份有限公司 | High-strength 18Cr-8Ni stainless steel hot rolled plate and manufacturing method thereof |
| CN102365383A (en) * | 2009-03-27 | 2012-02-29 | 住友金属工业株式会社 | Austenitic stainless steel |
| CN102747302A (en) * | 2011-04-21 | 2012-10-24 | 江苏星火特钢有限公司 | High strength-toughness ultralow carbon and nitrogen-controlling austenitic stainless steel |
| JP2012224904A (en) * | 2011-04-19 | 2012-11-15 | Nippon Yakin Kogyo Co Ltd | Method for bright annealing of duplex stainless steel |
| CN101668873B (en) * | 2007-04-27 | 2012-11-28 | 株式会社神户制钢所 | Austenitic stainless steel excellent in intergranular corrosion resistance and stress corrosion cracking resistance, and method for producing austenitic stainless steel |
| CN103352175A (en) * | 2013-06-24 | 2013-10-16 | 钢铁研究总院 | Nitrogen-containing austenitic stainless steel and manufacturing method thereof |
| CN106917031A (en) * | 2015-12-25 | 2017-07-04 | 上海电气上重铸锻有限公司 | Z3CN18-10 controls the manufacture method of nitrogen austenitic stainless steel forging |
-
2017
- 2017-11-15 CN CN201711132673.2A patent/CN107916374A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07188863A (en) * | 1993-12-27 | 1995-07-25 | Daido Steel Co Ltd | Corrosion-resistant, high-strength austenitic stainless steel |
| CN101668873B (en) * | 2007-04-27 | 2012-11-28 | 株式会社神户制钢所 | Austenitic stainless steel excellent in intergranular corrosion resistance and stress corrosion cracking resistance, and method for producing austenitic stainless steel |
| CN101748342A (en) * | 2008-11-28 | 2010-06-23 | 宝山钢铁股份有限公司 | High-strength 18Cr-8Ni stainless steel hot rolled plate and manufacturing method thereof |
| CN102365383A (en) * | 2009-03-27 | 2012-02-29 | 住友金属工业株式会社 | Austenitic stainless steel |
| JP2012224904A (en) * | 2011-04-19 | 2012-11-15 | Nippon Yakin Kogyo Co Ltd | Method for bright annealing of duplex stainless steel |
| CN102747302A (en) * | 2011-04-21 | 2012-10-24 | 江苏星火特钢有限公司 | High strength-toughness ultralow carbon and nitrogen-controlling austenitic stainless steel |
| CN103352175A (en) * | 2013-06-24 | 2013-10-16 | 钢铁研究总院 | Nitrogen-containing austenitic stainless steel and manufacturing method thereof |
| CN106917031A (en) * | 2015-12-25 | 2017-07-04 | 上海电气上重铸锻有限公司 | Z3CN18-10 controls the manufacture method of nitrogen austenitic stainless steel forging |
Non-Patent Citations (1)
| Title |
|---|
| 唐代明: "《金属材料学》", 30 June 2014, 西南交通大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108601102A (en) * | 2018-05-10 | 2018-09-28 | 珠海泰米科技有限公司 | The compound heat-carrying conductor of steel enamel and electrically heated heat-generating disc, kettle, water heater of antirust scale-deposit-preventing |
| CN109136771A (en) * | 2018-10-19 | 2019-01-04 | 太原钢铁(集团)有限公司 | austenitic stainless steel and preparation method thereof |
| CN109649367A (en) * | 2018-12-05 | 2019-04-19 | 中车长江车辆有限公司 | The preparation method and vehicle of a kind of brake pipe, brake pipe |
| CN112391577A (en) * | 2020-08-19 | 2021-02-23 | 江阴市春瑞金属制品有限公司 | Pseudo-austenitic stainless spring steel wire and performance regulation and control method thereof |
| CN112391577B (en) * | 2020-08-19 | 2022-04-22 | 江阴市春瑞金属制品有限公司 | Pseudo-austenitic stainless spring steel wire and performance regulation and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2623624B1 (en) | Austenite high-manganese stainless steel, manufacturing method therefor, and member using said steel | |
| JP5756935B2 (en) | Austenitic stainless steel excellent in intergranular corrosion resistance and stress corrosion cracking resistance and method for producing the same | |
| JP5217576B2 (en) | Austenitic stainless steel for heat-resistant parts and heat-resistant parts using the same | |
| EP1873270B1 (en) | Low alloy steel | |
| CN107916374A (en) | A kind of control nitrogen austenitic stainless steel of anticorrosion stress-resistant excellent performance | |
| US20040238079A1 (en) | Stainless-steel pipe for oil well and process for producing the same | |
| EP2455508A1 (en) | High strength / corrosion-resistant,.austenitic stainless steel with carbon - nitrogen complex additive, and method for manufacturing same | |
| CA2954755C (en) | Austenitic stainless steel | |
| EP2889390B1 (en) | Highly strong, highly tough and highly corrosion-resistant martensitic stainless steel | |
| KR101140651B1 (en) | High-Cr ferritic/martensitic steels having an improved creep resistance and preparation method thereof | |
| EP1988182A1 (en) | Ferritic heat-resistant steel | |
| JP2010209402A (en) | High-strength stainless steel pipe having high toughness and excellent corrosion resistance for oil well | |
| CN112877611A (en) | Austenitic stainless steel, fine-grain large-size bar and preparation method and application thereof | |
| KR101516718B1 (en) | Ferrite-martensite steel having high creep resistnace and method thereof | |
| KR20140130590A (en) | Ferrite-martensite steel having high impact properties and method thereof | |
| JP3848463B2 (en) | High strength austenitic heat resistant steel with excellent weldability and method for producing the same | |
| KR101769744B1 (en) | Educed-activation ferrite-martensite steel with high tensile strength and creep resistnace and method thereof | |
| KR20110006045A (en) | C+n austenitic stainless steel with high strength and corrosion resistance having tungsten and fabrication method thereof | |
| EP1087028B1 (en) | High-chromium containing ferrite based heat resistant steel | |
| KR20120050085A (en) | High nitrogen austenitic stainless steels with high mechanical properties and excellent resistance to pitting corrosion and fabrication methods thereof | |
| KR101764097B1 (en) | Reduced-activation ferrite-martensite steel with high creep resistnace and method thereof | |
| CN109182673A (en) | A kind of low-cost high-strength abrasion-proof stainless steel and its production method | |
| KR20200058639A (en) | Stainless steel including boron with excellent hot ductility and tensile property and method of manufacturing the same | |
| KR101275105B1 (en) | High Cr Ferritic/Martensitic steels having an improved creep resistance for in-core component materials in nuclear reactor, and preparation method thereof | |
| KR101306263B1 (en) | High-nitrogen low-nickel duplex stainless steels with an excellent pitting corrosion resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180417 |